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Estimation of Metabolizable and Net Energy of Iranian barley grain by using Regressions equations. | ||
| علوم و فنون دامپروری | ||
| Article 8, Volume 4, Issue 17, March 2016, Pages 73-82 PDF (1.05 M) | ||
| DOI: 10.22092/aasrj.2016.106677 | ||
| Author | ||
| hossein gholami* | ||
| Abstract | ||
| This research was conducted to estimated energetic value of Iranian barley grain for completing the Iranian feed composition tables. In this research about 5000 data of chemical composition, gas test and Tilley and Terry were used. The data entered in excel spreadsheet and after reviewing all of them, uncertain data were excluded. Linear, logarithmic, inverse, quadratic, cubic, power, S, and exponential fitted equations with SPSS software from crude ash were very significant. Among the fitted equations, the linear equation was chosen because of its higher R2. For estimation of metabolizable energy in barley, Ash content was used as a predictor and the equation was as: ME (Mcal/kg DM) = 3.970 - 0.132 (Ash(٪ . In this regard estimation of ME in Iranian barley grain using as indicator was 3.57, estimated ME using gas test was 3.64 and by Tilley and Terry method, was 3.59 Mcal/kg DM. The estimated NEL according to Ash percentage was 2.33 Mcal/kg DM. | ||
| Keywords | ||
| chemical compositin; gas test; Tilly & Terry; metabolizable energy estimation; Iranian barley grain | ||
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